package org.opens.mybatisplus.serialize;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

import java.io.IOException;
import java.text.DecimalFormat;

/**
 * 是jackson处理Double类型的数据为json时, 控制double类型的数据的格式.
 */
public class DoubleSerialize extends JsonSerializer<Double> {

    private DecimalFormat df = new DecimalFormat("#0.00");

    @Override
    public void serialize(Double value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
        gen.writeString(this.df.format(value));
    }

}
